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64945e9387
The core implementation details are described in win32/nice.c for values sent to proc_nice(), these can however be discussed to maybe comply with those of wmic, Anatol, thoughts? The test supplied uses wmic for testing the functionality, it could potentially fail on systems where either wmic is not available or the system language is not english (as Microsoft tends to translate even CLI programs).
81 lines
3.0 KiB
C
81 lines
3.0 KiB
C
/*
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+----------------------------------------------------------------------+
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| PHP Version 7 |
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+----------------------------------------------------------------------+
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| Copyright (c) 1997-2016 The PHP Group |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Kalle Sommer Nielsen <kalle@php.net> |
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+----------------------------------------------------------------------+
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*/
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#include <php.h>
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#include "nice.h"
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/*
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* Basic Windows implementation for the nice() function.
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*
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* This implementation uses SetPriorityClass() as a backend for defining
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* a process priority.
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*
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* The following values of inc, defines the value sent to SetPriorityClass():
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*
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* +-----------------------+-----------------------------+
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* | Expression | Priority type |
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* +-----------------------+-----------------------------+
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* | priority > 5 | REALTIME_PRIORITY_CLASS |
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* +-----------------------+-----------------------------+
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* | priority == 5 | HIGH_PRIORITY_CLASS |
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* +-----------------------+-----------------------------+
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* | priority > 0 | ABOVE_NORMAL_PRIORITY_CLASS |
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* +-----------------------+-----------------------------+
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* | priority == 0 | NORMAL_PRIORITY_CLASS |
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* +-----------------------+-----------------------------+
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* | priority < -5 | BELOW_NORMAL_PRIORITY_CLASS |
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* +-----------------------+-----------------------------+
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* | priority < -10 | IDLE_PRIORITY_CLASS |
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* +-----------------------+-----------------------------+
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*
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* This is applied to the main process, not per thread, although this could
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* be implemented using SetThreadPriority() at one point.
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*/
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PHPAPI int nice(zend_long p)
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{
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DWORD dwFlag = NORMAL_PRIORITY_CLASS;
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if (p > 5) {
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dwFlag = REALTIME_PRIORITY_CLASS;
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} else if (p == 5) {
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dwFlag = HIGH_PRIORITY_CLASS;
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} else if (p > 0) {
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dwFlag = ABOVE_NORMAL_PRIORITY_CLASS;
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} else if (p < 0 && p < -5) {
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dwFlag = BELOW_NORMAL_PRIORITY_CLASS;
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} else if (p < -10) {
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dwFlag = IDLE_PRIORITY_CLASS;
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}
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if (!SetPriorityClass(GetCurrentProcess(), dwFlag)) {
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return -1;
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}
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return 0;
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}
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/*
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* Local variables:
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* tab-width: 4
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* c-basic-offset: 4
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* End:
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* vim600: sw=4 ts=4 fdm=marker
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* vim<600: sw=4 ts=4
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*/
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